What is 1.4404 2b Stainless Steel Pipe?
Jun 16, 2025
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If you're sourcing corrosion-resistant piping solutions for industrial or commercial applications, you've likely come across the term "1.4404 2B stainless steel pipe." But what exactly does this specification mean, and why does it matter for your procurement decision?
In this article, we break down the meaning, composition, surface finish, and typical applications of 1.4404 2B stainless steel pipes - helping you confidently choose the right material for your project.
What is 1.4404 2B Stainless Steel Pipe?
1.4404 is the EN (European) designation for AISI 316L stainless steel, known for its low carbon content and excellent corrosion resistance.
2B is a cold-rolled surface finish, characterized by a smooth, matte-gray appearance, achieved by acid pickling and light skin-pass rolling.
So, 1.4404 2B stainless steel pipe refers to a low-carbon, molybdenum-alloyed stainless steel pipe with a smooth, non-reflective finish, ideal for hygienic, corrosive, or welded applications.
Chemical Composition of 1.4404 Stainless Steel pipe (AISI 316L)
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Chromium (Cr) | 16.5 – 18.5 |
| Nickel (Ni) | 10 – 13 |
| Molybdenum (Mo) | 2.0 – 2.5 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
What is the 2B Surface Finish?
The 2B finish is the most common finish used on industrial stainless steel. It is smooth but not shiny, easy to clean, and provides a consistent, low friction surface. Ideal for food, pharmaceutical and chemical environments where hygiene and cleanliness are important.
In Addition to 2B Finish, We Also Offer:BA (Bright Annealed),No.4 (Brushed Finish),Mirror Finish (No.8):Pickled Finish (Descaled),Custom Polished Finishes (e.g., 180–600 grit).
Difference Between 1.4401 2B and Polished Stainless Steel pipe
2B finish and polished finish refer to different surface treatments applied to stainless steel pipes or sheets:
| Finish Type | Characteristics | Typical Use Cases |
|---|---|---|
| 2B Finish | Cold-rolled, acid pickled, and light skin passed. Matte, smooth, and cleanable. | Industrial pipes, chemical lines, food-grade systems |
| Polished Finish | Mechanically ground to achieve a reflective surface (e.g., #4, #8). Glossy and aesthetic. | Decorative applications, medical instruments, architectural |
AISI 316L vs 1.4404 Stainless Steel Pipe
AISI 316L and EN 1.4404 are equivalent grades in the ASTM and EN standards.Both are low-carbon molybdenum-bearing austenitic stainless steels.
Applications of 1.4404 2B Stainless Steel Pipes
CIP (Clean-in-Place) pipe systems
Heat exchangers and condensers
Process lines for acidic or saline media
Water desalination plants
Underground piping in coastal areas
Medical gas pipeline systems
We offer 1.4404 in standard product forms including tubes, pipes, plates, strips, sheets, round bars, flat bars, forgings, hexagonal bars and wires. These products are available in a wide variety of sizes. For detailed specifications and product information, please visit the following website.
Products:https://www.stainless-steels.com/stainless-steel-pipe/stainless-steel-seamless-pipe/tp316l-stainless-steel-pipe.html
GNEE is a professional supplier of austenitic stainless steel, super austenitic stainless steel, duplex steel, super duplex steel and other materials. At present, the total investment is RMB 30 million, the plant area is more than 35,000 square meters, and the number of employees is more than 200. It has internationally advanced high-precision production equipment and first-class processing technology. The product implementation standards include: national standard, American standard, Japanese standard, German standard, European standard, Russian standard, etc. At the same time, non-standard products can be customized according to customer requirements.
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